from the same FAQ:
'12. Tools of the trade
What tools and other resources does a numismatist need? The answer depends on the material being collected and its
value. At a minimum, collectors should have a magnifier and an applicable reference book, though someone collecting
only coins from circulation may be able to get by without them. A comfortable location with a suitable light source for
examining coins is also advisable.
All sorts of magnifiers are available. For grading, 4-10 times magnification is sufficient, with 7x magnification considered
by many to be ideal. Collectors of die varieties need 10x magnification or more.
Anyone purchasing coins should own at least one general reference book with information on dates and mintmarks,
major varieties, grading guidelines and prices. Additional references examining topics in more detail (e.g. grading,
counterfeit detection or die varieties) are often useful. Periodicals will have more recent pricing information and news.
Good reference works can pay for themselves several times over by helping you avoid bad decisions.
Recommended lighting for examining coins is an incandescent source of about 75 watts (higher if other light sources are
in the room) located within half a meter of where you'll hold the coins. Some people prefer halogen lamps, while
fluorescent lights should be avoided. Find a comfortable location in your home where you won't be frequently
distracted.
Depending on the collector's interests and value of the collectibles, other useful tools sometimes include a microscope,
gloves, mask, velvet pad, additional references, metal detector, scale and/or photographic equipment.
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